<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt />
      </div>
      <!-- 登录表单区域 -->
      <el-form label-width="0px" :model="formdata" class="login_form" :rules="rules" ref="loginFormRef">
        <el-form-item prop="username">
          <el-input v-model="formdata.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="formdata.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="loginFormReset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      formdata: {
        username: "admin",
        password: "123456"
      },
      // 表单验证规则对象
      rules:{
        username:[
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10个字符', trigger: 'blur' }
        ],
        password:[
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15个字符', trigger: 'blur' }
        ]
      }
    };
  },
  methods:{
    // 重置表单
    loginFormReset(){
      this.$refs.loginFormRef.resetFields()
    },
    // 表单预验证
    login(){
      this.$refs.loginFormRef.validate(async valid=>{
        const {data:res}=await this.$http.post("login",this.formdata)
        if(res.meta.status!==200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        // sessionStorage记录登记信息
        window.sessionStorage.setItem('token',res.data.token)
        // 编程式导航跳转到home页
        this.$router.push("/home")
      })
    }
  }
};
</script>

<style scoped lang="less">
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #ffffff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    width: 230px;
    height: 230px;
    border: 1px solid #eee;
    border-radius: 50%;
    box-shadow: 0 0 10px #ddd;
    padding: 10px;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #ffffff;
    img {
      width: 100%;
      height: 100%;
      border: 1px solid #eee;
      border-radius: 50%;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
